Browser = the program you use to look at the Internet.
IE = Microsoft's Internet Explorer (commonly marketed with cable modems, or AOL, etc.)
There are other Browsers. For example in Mozilla or Netscape a temporary fix is in the "View" menu, drop down and pick "Decrease" font size.
A more permanent fix is found under the drop down "Edit" menu in the top bar. Select "Preferences" > select "Appearance" > select Font; the smaller the number, the smaller the font.
I would suspect something else happened though if this occurred spontaineously. If everything else on your desktop appear normal, you can be pretty sure it is the browser only, see Kirk's or my "fixes", if other things appear weird or larger, ie. icons, toolbars, etc. then you may have to change the properties in your "Display Properties" box. Then go to "Settings". Access this through your Control Panel, or a short cut is to right click anywhere on the desktop where there is not an open window and select "Properties."
Good luck, hopefully the decrease font will be enough. If you are using Opera or another browser, ask your question in the "Computer Support" thread on this forum and re ask your question.
-Michael
Kenpo-Texas.com